11 Replies Latest reply: Jul 24, 2012 12:10 PM by baltwo
barubin Level 1 Level 1 (15 points)

I have an iMac my family uses running Snow Leopard and during the automatic Software Update installation of the 10.6.8 Update last year the Mac hung. Fortunately for me, I had downloaded the 10.6.8 Combo Update separately because the iMac I use is not connected to the WWW. I also have lots of links to applications in the Dock of System Admin's account because the Finder was hosed but via the Terminal app I was able to recover enough that my family is able to continue to use the iMac even though I know that it isn't as stable nor as fast as it was before the update hung.

 

I have purchased Lion but, I have only used it to update the iMac's flawed contents that I imaged onto a FW800 HDD. Lion runs faster (FW800) and is more stable than Snow Leopard is running on the internal SATA HDD. With Mountain Lion soon to be available, I want to put that on the iMac's internal HDD. I have thought about how I would accomplish this and my plan is to either simply update Snow Leopard on the internal HDD or reformat it, install 10.8, and use the Migration Assistant to migrate from a copy/image of the pre-reformatted-and-upgraded HDD or from Time Machine.

 

While I have upgraded OS's many times before (I still have the Plus I bought new), I have never used the Migration Assistant. So I'm more comfortable with an OS upgrade (and it would take LOTS less time) but a clean install of 10.8 would ensure that all the bad "juju" from the 10.6.8 update disaster is eliminated so I'm leaning in that direction.

 

Does anybody have any strong opinions about either method or have a different/better method to share?

 

TIA.

  • 1. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    See Pondini's Setup New Mac guide, for starters. Installing the OS onto an empty volume is like having a new machine.

  • 2. Re: Migration feedback requested
    barubin Level 1 Level 1 (15 points)

    baltwo,

     

    I agree with your statement regarding "installing the OS onto an empty volume".

     

    I've also read that some individuals have problems with the Migration Assistant (more than I've read with the Setup Assistant, like in the guide you provide the link to. Thanks.).

  • 3. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    Good luck. Let us know how it turns out.

  • 4. Re: Migration feedback requested
    barubin Level 1 Level 1 (15 points)

    baltwo,

     

    Will do.

     

    If I had LOTS of time and external HDDs, I would first upgrade the OS after imaging it, then image that result. Then I would then reformat the internal HDD and do a new install of 10.8, image that, and then see which works best: Setup Assistant, Migration Assistant using the 10.6 image, or Migration Assistant using Time Machine. I would then evaluate which process was most successful based upon criteria I have in my head and share here. Did I mention that I'm a Computer Scientist?

  • 5. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    By image I hope you mean a bootable backup/clone made with something like Carbon Copy Cloner or SuperDuper! and not an actual disk image.

     

    Based on my experience, an install followed by Setup Assistant or restoring the bootable backup/clone and installing on top result in the same end product. I don't use TM because it requires restoring to ensure that it works properly, whereas the bootable backup/clone is immediately testable by booting into it.

  • 6. Re: Migration feedback requested
    barubin Level 1 Level 1 (15 points)

    baltwo,

     

    I don't use either application you mention, just the Disk Utility via the "Restore" feature to make a bootable backup/clone.

     

    BTW, just to make this more "interesting" than it already is, since I'm leaning towards installing 10.8 on a clean drive, before I "waste" time with either Setup Assistant or Migration Assistant after the 10.8 installation I'll install Boot Camp and after that I'll run an assistant app.

     

    Also, since it seems that only you and I are in this conversation, do you think I should post this question in the Lion discussions? I am aware that some consider it bad manners to post ANY question to more than one forum but I am even more aware that not everyone is watching every forum.

  • 7. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    The problem with DU is that it requires three volumes and takes about twice as long as using CCC or SD!; whereas, you can do he job with those other apps and clone the boot volume to another.

     

    As for your 10.8 plan, peruse Pondini's Setup New Mac guide and I strongly suggest not installing, creating a new admin account, and then using the Migration Assistant. In fact, I'm a proponent of just installing on top of a bootable backup/clone of your latest OS version, which is the fastest way to get the job done.

  • 8. Re: Migration feedback requested
    barubin Level 1 Level 1 (15 points)

    I'll have to take your word which method is faster since I've only used DU myself. As for the requirement for more HW, I almost always use the most recent install/upgrade DVD to boot the Mac so I only use one external HDD.

     

    I agree that upgrading the OS is the fastest and also ensures that all the apps and user data don't get moved back and forth which has the potential for bad things to happen. A clean install, like you mentioned in your first reply is like having a new machine and I have no way of knowing that a 10.8 upgrade of my 10.6 OS will eliminate all the issues from the 10.6.8 update disaster that I'm living with now. I know that 10.7 runs great on FW800 drive (at least it is much faster and more stable than 10.6 on the internal HDD) but I don't know if that upgrade (or a 10.8 upgrade) fixed/removed all the issues the 10.6.8 update crash caused.

     

    BTW, I noticed that you have a dual boot G4 listed in your profile. This week I moved some Clasic apps and files from a dead G5 iMac (video is dead but I could still "boot" into Target Disk Mode) to a 333Mhz iMac via Ethernet from my dual boot G5 PowerMac (Leopard/Tiger) I used to save the recovered files. I then figured out how to get AppleTalk to function between the two of them so I could play a network game of Strategic Conquest between them. Sadly, tomorrow I'll be giving the functioning iMac to the friend whose G5 iMac died. But now I might get one of my G3 B&W or my G4 QS running Strategic Conquest so I can play with friends. Have a great weekend.

  • 9. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    I almost always use the most recent install/upgrade DVD to boot the Mac so I only use one external HDD

    That means you're booting with the install disc, freeing the boot volume and the ext HD from the equation. Running anything from an install disc means it's slower than running from an HD volume. My experience is based on having moderated the CCC forum for over six years, until the owner shifted to a new help desk model.

     

    I've not done a clean install the past twelve years and my current OS started in OS 9 and I just installed 10.2 through 10.7 on top of each successive cat. FWIW, I salsa beta-tested every cat from Panther through Lion.

  • 10. Re: Migration feedback requested
    barubin Level 1 Level 1 (15 points)

    baltwo wrote:

    My experience is based on having moderated the CCC forum for over six years

    I now can understand your familiarity with CCC.

    baltwo wrote:

    FWIW, I salsa beta-tested every cat from Panther through Lion.

    I've been a beta tester but what do you mean by "salsa" WRT beta testing?

     

    TIA.

  • 11. Re: Migration feedback requested
    baltwo Level 9 Level 9 (60,125 points)

    Fat-fingering error, compounded by the dumb auto-speller. Should have been ALSO.